Use of thiadiazoles as antifouling agent.

摘要

The invention relates to thiadiazole compounds of the type where R1, R2 and R3 are - hydrogen, - alkyl groups having 1-4 carbon atoms, - substituted alkyl groups having 1-4 carbon atoms, optionally substituted by halogen, an alkoxy group, carboxyl group, hydroxyl group or nitro group, - CN, CF3, halogen or NO2, or - COOR where R is H or alkyl groups having 1-4 carbon atoms, which, as a consequence of their characteristics, are highly effective biocides which have broad antifouling properties and which are suitable for the biocidal finishing of surfaces in contact with sea water and for protecting these surfaces against population by sea organisms. The compounds according to the invention are added to, or incorporated by polymerisation into, the coatings which protect surfaces at concentrations of 0.1 to 25 % by weight, in particular 5 to 15 % by weight.